The Bosch 11250VSRD 7/8- In. SDS-plus� Bulldog� Rotary Hammer with Dust Collection features a dual-fan system with a second set of fan blades for outstanding air suction for more dust collection. The microfilter system has an integrated paper filter captures a high volume of silica dust for reduced exposure. The hammer itself weighs only 5.5 Lbs., but it has a muscular 6.1 Amp motor that provides 1.7 Ft.-Lbs. of impact energy. It has an ergonomic pistol-grip handle, which provides outstanding comfort and performance in hard-to-reach or all-day applications. It has a dual-mode selector for drilling versatility � rotary hammer or rotation-only mode. The 11250VSRD has a rotating brush plate for longer brush life and a variable-speed reversing trigger for accurate bit starting. The SDS-plus� system provides for tool-free bit changes with automatic bit locking. It has an integral clutch to minimize risky torque reaction.